Highly recommended for photographer to invest into an eyecup. Its primary function
is to prevent stray light from entering the viewfinder from the rear and allows eyeglass
wearers to use the Nikon F4 without fear of scratching glasses. But most often, for
extended long hours shooting, it is less stressful to eyestrain and permits you to
cencentrate more.

The DK-2 is actually improved from the
DK-4. It has added a metal ring to locked the rubber eyecup securely in place without
worrying the eyecup dropping off. A good news is, the DK-2 was first introduced for
the Nikon
F3HP (High-Eyepoint finder
and this accessory has been around for the last 20 years and many photo retailers
may still be keeping this handy accessory. Yes, the DK-2 is applicable both to the
subsequent Nikon
F4's DP-20 as well as the
Nikon F5 (DP-30) multi-meters finders.

Note: for non-HP eye level finder of
Nikon F3 and the F3AF's DX-1 finder,
you should use the DK-4 (the DK-4 is very poorly designed and often it drops off
from the eyepiece).

How to Attach:

1. First,
remove the black ring from the rear of the eyecup

2. Next,
loosen (but do not remove) the eyepiece by turning it counterclockwise

3. Remove
the rubber and ring* already attached to the eyepiece

4. Attach
the eyecup to the eyepiece

5. Now remove
the eyepiece along with the eyecup, from the viewfinder and replace the black ring
on the rear of the assembly

6. Finally,
reattach the eyecup assembly to !he viewfinder by turning it clockwise until it is
tightly in place

* Do not forget to save-keeping the
rubber ring for possible future use